40550430621 has 4 divisors (see below), whose sum is σ = 54067240832. Its totient is φ = 27033620412.

The previous prime is 40550430611. The next prime is 40550430631. The reversal of 40550430621 is 12603405504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40550430611) and next prime (40550430631).

It is not a de Polignac number, because 40550430621 - 2³¹ = 38402946973 is a prime.

It is a super-3 number, since 3×40550430621³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40550430601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6758405101 + ... + 6758405106.

It is an arithmetic number, because the mean of its divisors is an integer number (13516810208).

Almost surely, 2^40550430621 is an apocalyptic number.

It is an amenable number.

40550430621 is a deficient number, since it is larger than the sum of its proper divisors (13516810211).

40550430621 is a wasteful number, since it uses less digits than its factorization.

40550430621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516810210.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 40550430621 in words is "forty billion, five hundred fifty million, four hundred thirty thousand, six hundred twenty-one".